What is NOT one of the effects of alcohol abuse on Marines?

The effect of alcohol abuse that is indicated as not applicable is the idea that it increases effectiveness in combat. This tracks with established understanding that alcohol generally impairs cognitive function, reaction time, and overall physical coordination, all of which are critical for effective performance in combat situations. When Marines abuse alcohol, they are likely to suffer from decreased concentration, judgment, and decision-making abilities, which can lead to detrimental outcomes in high-stress environments.

Conversely, the other options highlight significant concerns regarding alcohol abuse, such as its interference with performance, threat to combat readiness, and increase in safety risks. Each of these points is well-documented and underscores the negative impacts of alcohol on a Marine’s ability to perform effectively and maintain operational readiness. Therefore, portraying alcohol abuse as enhancing effectiveness in combat contradicts the adverse effects that alcohol can have on Marines and their missions.